OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application$ D' a) X, Z+ K8 t$ r
/*. @9 o+ g/ J4 ]: Z: K% G, \8 g) h
* edma_test.c
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*8 O4 {1 n4 P/ @
* brief EDMA3 Test Application7 B# d" k7 _. L3 g$ C
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* This file contains EDMA3 Test code.6 q" s S" f q
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE8 D# D* g: J! ]) W$ L' X' t
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT
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* TO CHANGE.$ u9 C) g) a1 T2 \7 y! j
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or% t7 R y" @" V( L+ N* V. \
* modify it under the terms of the GNU General Public License as8 y4 ]" o9 ^1 c h" G8 y
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the) E6 C+ t/ C! e7 [; H6 S7 @& t7 ^
* GNU General Public License for more details.9 |3 N" E0 N. |3 G$ C6 Q5 ~, T
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#include <linux/module.h># s7 t/ o6 b* K, ^; `8 Y- W
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>! B/ y/ r7 ^+ S4 u
#include <linux/moduleparam.h>8 ^8 I2 w0 g. k2 l
#include <linux/sysctl.h>+ ?+ |- p# g c$ s/ B1 e! h
#include <linux/mm.h>8 s4 t w0 Q. D
#include <linux/dma-mapping.h>& o6 P% X p; }' a
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#include <mach/memory.h>- h# n0 W1 T5 ]2 ?( q! P
#include <mach/hardware.h>. I% S1 Z" u/ r% H* E5 b. x" D
#include <mach/irqs.h>2 n8 Y/ r# {8 V# Q
#include <asm/hardware/edma.h>
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#undef EDMA3_DEBUG, {5 R. K* M( e! F
/*#define EDMA3_DEBUG*/* q$ z' {2 j6 ~3 E) d
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)" e+ p' _' A0 q! s+ O& |
#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)
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#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN' \- F+ p, U# v
#define DMA_FN_OUT9 r& Z0 O8 I0 @. ?9 r1 V; X
#endif2 ]9 O) e( J9 z' n! l4 v1 ]" p) z
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)$ i' @9 A, @1 u5 Z# o9 Z1 c
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22# }1 ~+ c7 V8 H5 v5 n+ p- s
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;/ r/ Z* K r) I9 j
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);+ C/ W; H( t+ p' N3 a, \) G$ l" K. O
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;
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char *dmabufsrc2 = NULL;% _2 D; E" R( j# I; q! \
char *dmabufdest1 = NULL;
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char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;
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static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);8 G$ v0 F3 o8 A. i/ L
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动